Fastener

ABSTRACT

A fastener invertible between a states where comb teeth are closed or opened, that permits hairs to be easily inserted between the opened comb teeth and an inverting member, and more hairs to be inserted. The fastener includes an inverting member formed of an elastic plate and having, in an initial state that is not deformed, quadrilateral plane shape including two long side portions and two short side portions , and an apart region disposed between the long and short side portions or on a middle of the short side portion extending in a longitudinal direction of the short side portion, the inverting member having connection regions disposed on both sides of the apart region ; a connection portion connecting the connection regions that are superimposed each other by a deformation of the inverting member; and comb teeth fixed to one of the long side portions.

TECHNICAL FIELD

The present invention relates to a fastener that pinches and fixes anobject, particularly to a fastener applicable for fixing a wig base onwhich artificial hairs are planted to a user's head.

BACKGROUND ART

A fastener for a wig is sometimes used in order to fix a wig base onwhich artificial hairs are planted to a user's head. The above fastenerfor a wig is attached to a back surface of the wig base (a side withwhich the user's head comes into contact) with sewing threads or thelike, so that the fastener for a wig fixes the wig base to the user'shead by pinching user's hairs. In the above fasteners for a wig, astructure using an inverting member to which a plurality of comb teethare attached is proposed (see, for example, Patent Literature 1).

CITATION LIST Patent Literature

-   Patent Literature 1: WO 2007/129708 A

SUMMARY OF THE INVENTION Technical Problem

According to an inverting member of a fastener for a wig disclosed inPatent Literature 1, a curved shape that is capable of being inverted isformed with a U-shaped member including a supporting piece to which aplurality of comb teeth are attached and a pair of leg pieces projectingfrom both end portions of the supporting piece, and a connection piecethat pulls the leg pieces of both sides inward. The inverting member isinverted from a close state in which the comb teeth are in contact withthe inverting member to an opposite side so that the inverting memberwarps sufficiently. Therefore, the comb teeth open with respect to theinverting member such that user's hairs are inserted between the openedcomb teeth and the inverting member. Then, the comb teeth are invertedagain in a direction in which comb teeth are closed, so that the combteeth and the inverting member pinch the user's hairs to fix the user'shairs.

According to the fastener for a wig disclosed in Patent Literature 1,when the leg pieces of the both sides are pulled inward by theconnection piece, the leg pieces are respectively twisted to rotatearound connection portions to the supporting piece. In this case, sinceeach of leg pieces is shorter than the supporting piece, moving distanceof a tip portion of each of twisted leg pieces is small, so that adeformed amount of the inverting member is limited.

Therefore, when the inverting member deformed by the connection piece isinverted, an angle of opening of the comb teeth with respect to theinverting member is relatively narrow. As a result, when a user wearsthe wig, it is difficult that the user inserts their own hairs betweenthe opened comb teeth and the inverting member, and the amount of hairspinched by the comb teeth and the inverting member is limited.

It is an object of the present invention to solve the above problem andprovide a fastener that can be inverted to switch between a state inwhich comb teeth are closed and a state in which the comb teeth areopened, that permits hairs to be easily inserted between the opened combteeth and an inverting member, and that permits more hairs to beinserted.

Solution to Problem

To solve the above problem, a fastener of the present inventionincludes: an inverting member formed of an elastic plate shape member,the inverting member having, in an initial state that is not deformed, asubstantial quadrilateral plane shape composed of a pair of long sideportions being opposed to each other and a pair of short side portionsbeing opposed to each other, and an apart region being disposed betweenthe long side portion and the short side portion or on a middle of theshort side portion to extend in a longitudinal direction of the shortside portion, the inverting member having connection regionsrespectively disposed on both sides of the apart region; a connectionportion that connects the connection regions that are superimposed eachother by a deformation of the inverting member; and a plurality of combteeth whose one ends are fixed to one of the long side portions.

Advantageous Effects of Invention

Thus, the present invention can provide the fastener that can beinverted to switch between a state in which the comb teeth are closedand a state in which the comb teeth are opened, that permits hairs to beeasily inserted between the opened comb teeth and the inverting member,and that permits more hairs to be inserted.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic plan view illustrating an inverting member of oneembodiment of the present invention.

FIG. 2(a) is a schematic plan view illustrating a fastener of the oneembodiment of the present invention; FIG. 2(b) is a schematic side view,seen from arrows B shown in FIG. 2(a), illustrating the fastener in astate in which comb teeth are closed; and FIG. 2(c) is a schematic sideview, seen from the arrows B shown in FIG. 2(a), illustrating thefastener in a state in which the comb teeth are opened.

FIG. 3(a) is a plan view (photograph) illustrating an example of astructure like the fastener of the one embodiment of the presentinvention; FIG. 3(b) is a side view (photograph) (a state in which thecomb teeth are closed) seen from arrows B shown in FIG. 3(a); and FIG.3(c) is a side view (photograph) (a state in which the comb teeth areopened) seen from arrows C shown in FIG. 3(a).

FIG. 4 is a schematic plan view illustrating an inverting member ofanother embodiment of the present invention.

FIG. 5 is a schematic plan view illustrating an inverting member offurther embodiment of the present invention.

FIG. 6 is a view (photograph) illustrating Example 1 of the fastener ofthe present invention.

FIG. 7 is a view (photograph) illustrating Example 2 of the fastener ofthe present invention.

FIG. 8 is a view (photograph) illustrating Example 3 of the fastener ofthe present invention.

FIG. 9 is a view (photograph) illustrating a comparative example 4 ofthe fastener of the present invention.

FIG. 10 is a schematic plan view illustrating a fastener of a furtherembodiment including a comb teeth shape different from that shown inFIGS. 2(a), 2(b), and 2(c).

FIG. 11 is a view (photograph) illustrating an example of the fastenerof the further embodiment shown in FIG. 10.

FIG. 12 is a graph illustrating a relation between a ratio D/W of amoving amount D when the inverting member is deformed to a length W ofone of long side portions (a comb teeth attachment part) and a distance(a maximum distance) H when the comb teeth are opened, in the fastenerof the present invention.

FIG. 13 is a graph illustrating a relation between the ratio D/W of themoving amount D when the inverting member is deformed to the length W ofthe one of the long side portions and an opening angle θ when the combteeth are opened, in the fastener of the present invention.

FIG. 14 is a plan view schematically illustrating a wig to which thefastener of the present invention is attached.

DESCRIPTION OF EMBODIMENTS

According to a first aspect of the present invention, a fastenerincludes an inverting member formed of an elastic plate shape member,the inverting member having, in an initial state that is not deformed, asubstantial quadrilateral plane shape composed of a pair of long sideportions being opposed to each other and a pair of short side portionsbeing opposed to each other, and an apart region being disposed betweenthe long side portion and the short side portion or on a middle of theshort side portion to extend in a longitudinal direction of the shortside portion, the inverting member having connection regionsrespectively disposed on both sides of the apart region; a connectionportion that connects the connection regions that are superimposed eachother by a deformation of the inverting member; and a plurality of combteeth whose one ends are fixed to one of the long side portions.

In a case in which the apart region is disposed between the long sideportion and the short side portion, the apart region may be disposedbetween one of the long side portions to which the comb teeth are fixedand the short side portion, and may be disposed between the other of thelong side portions to which the comb teeth are not fixed and the shortside portion. In a case in which the apart region is disposed on themiddle of the short side portion, the apart region may be disposed onany positions of the short side portion.

According to the first aspect, the connection regions that are disposedon both sides of the apart region in the initial state, are superimposedeach other by deforming the inverting member so that the invertingmember curves in a vertical direction with respect to a plane (a widesurface) of the inverting member, the inverting member having theplurality of comb teeth fixed thereto. Then, the superimposed connectionregions are connected each other with a connection member to form thefastener. According to the fastener describe above, when a user invertsthe inverting member to warp sufficiently to the opposite side, thefastener switches between a close state in which tips of the pluralityof comb teeth are in contact with the inverting member and an open statein which the tips of the plurality of comb teeth are apart from theinverting member. When an inverting operation is not performed by theuser, each of the states is maintained by an elastic force of theinverting member.

Especially, according to the first aspect, the apart region extends inthe longitudinal direction of the short side portion. Accordingly, whenthe inverting member is deformed to superimpose the connection regionsdisposed on both sides of the apart region, the long side portions whoselengths (dimensions in longitudinal directions) are large are twisted tobe rotated around connection portions with the short side portions.Although rotation angles (twist angles) around the connection portionsof side portions as rotation centers are same each other, the longerside portion that is rotated (twisted) has the larger moving distance ata tip portion of the rotation. That is, the inverting member 4 islargely deformed as the whole. As a result, in the inverting memberwhose connection regions are connected in a deformed state, differenceof angle of the inverting member that is curved in the oppositedirection under an inverted condition relative to a not invertedcondition becomes large.

Therefore, in a state in which the comb teeth are opened, an openingangle formed with the comb teeth and the inverting member is set to belarge. Accordingly, since hairs are inserted to a neighborhood of rootportions of the comb teeth fixed to the inverting member, more hairs areinserted. In the state in which the comb teeth are opened, the openingangle is large, so that a distance between the tips of the comb teethand the inverting member is set to be large. Accordingly, hairs areeasily inserted between the opened comb teeth and the inverting member.

According to a fastener of a second aspect of the present invention, inthe above first aspect, when, in the initial state, a length of the oneof the long side portions is set to be W and a moving amount of theconnection regions from the initial state to a superimposed state is setto be D, a relation of 0.15≤D/W≤0.17 is established.

A ratio D/W of the moving amount D of the connection regions from theinitial state to the superimposed state to the length W of the one ofthe long side portions to which the comb teeth are attached, means thatthe larger its value is, the larger the inverting member is deformed.Accordingly, in the state in which the comb teeth are opened, an angleformed with the comb teeth and the inverting member is set to be large,and the distance between the tips of the comb teeth and the invertingmember is set to be large. Therefore, hairs are easily inserted betweenthe opened comb teeth and the inverting member and more hairs areinserted between the opened comb teeth and the inverting member.

On the other hand, when a deformed amount becomes larger, durability ofthe inverting member tends to decrease, and a force required to invertthe inverting member tends to increase to deteriorate operability.

Taking the above into consideration collectively, D/W is set to be avalue within a range of not less than 0.15 and not more than 0.17 asdescribed later, so that a fastener is provided that is preferable interms of ease of insertion of hairs, amount of hairs that is capable ofinsertion, durability, and operability.

Incidentally, the moving amount D is expressed as a distance betweencenters of connection holes that are provided on the connection regionson both sides of the apart region and into which a connection portion isinserted.

According to a fastener of a third aspect of the present invention, inthe above first or second aspect, each of the comb teeth includes a headportion disposed on a free end of each of the comb teeth, and each ofthe head portions is positioned in a region in which the other of thelong side portions is disposed.

According to the third aspect, since a part of each of axis portions andeach of the head portions of tips of the comb teeth are positioned inthe region in which the other of the long side portions is disposed,hairs are certainly held between the axis portions and the head portionsof the comb teeth and the other of the long side portions in a state inwhich the comb teeth are closed. Since the comb teeth are not extendedbeyond the other of the long side portions, when a user wears the wig,there is no risk that the comb teeth interfere with a wig net.

According to a fastener of a fourth aspect of the present invention, inthe above first or second aspect, each of the comb teeth includes a headportion disposed on a free end of each of the comb teeth, at least apart of the head portion is positioned in an outward of the substantialquadrilateral plane shape, and the other part of each of the comb teethis positioned in a region of the substantial quadrilateral plane shape.

According to the fourth aspect, at least a part of the head portion oftip of each of the comb teeth is positioned in the outward of thesubstantial quadrilateral plane shape, so that, when a user wears thewig, the user easily scoops their hairs. Further, each of the headportions approaches the other of the long side portions as possible, sothat, when a user wears the wig, each of the comb teeth is restrainedfrom interfering with the wig net.

According to a fastener of a fifth aspect of the present invention, inthe above third or fourth aspect, a friction member is provided on theother of the long side portions.

According to the fifth aspect, the friction member is provided on theother of the long side portions. Therefore, in the state in which thecomb teeth are closed, a holding force that holds hairs between the combteeth and the friction member increases, so that hairs are morecertainly held. When the friction member is provided on the whole areaof the other of the long side portions whose width dimension is set tobe large, hairs are held in a wider area between the comb teeth and thefriction member with the axis portions as well as the head portions ofthe comb teeth.

According to a fastener of a sixth aspect of the present invention, inany one of the above first to fifth aspects, in the initial state, theapart region is provided between the other of the long side portions andthe short side portion, and the connection region disposed on the otherof the long side portions is arranged to be more apart from the one ofthe long side portions relative to a case in which a longitudinaldirection of the other of the long side portions is parallel to alongitudinal direction of the one of the long side portions.

According to the sixth aspect, the connection region disposed on theother of the long side portions is arranged to be more apart from theone of the long side portions relative to a case in which the other ofthe long side portions is parallel to the one of the long side portions.Accordingly, when the inverting member is deformed from the initialstate, the inverting member is more largely deformed to connect theconnection regions.

Consequently, according to the fastener that is formed, in the state inwhich the comb teeth are opened, the angle formed with the comb teethand the inverting member is set to be larger, and a distance between thetips of the comb teeth and the inverting member is set to be large.

According to a fastener of a seventh aspect of the present invention, inthe above sixth aspect, in the initial state, a central part of theother of the long side portions is formed to be curved in a direction toapproach the one of the long side portions.

According to the seventh aspect, since, in the initial state, thecentral part of the other of the long side portions is formed to becurved in the direction to approach the one of the long side portions,the inverting member is deformed to be more largely and smoothlyinverted. Consequently, according to the fastener that is formed, in thestate in which the comb teeth are opened, the angle formed with the combteeth and the inverting member is set to be larger, and a distancebetween the tips of the comb teeth and the inverting member is set to belarge.

With reference to the drawings, a detail explanation of a fastener of anembodiment of the present invention will be made hereinafter.

(Explanation of Fastener of One Embodiment)

With reference to FIGS. 1 to 3, the fastener of the embodiment of thepresent invention will be explained. In the first place, an invertingmember, as a primary member of the fastener, will be explained indetail, later on, the whole fastener will be explained in detail.

FIG. 1 is a schematic plan view illustrating an inverting member 4 ofone embodiment of the present invention. FIG. 2(a) is a schematic planview illustrating a fastener 2 of the embodiment of the presentinvention. FIG. 2(b) is a schematic side view, seen from arrows B shownin FIG. 2(a), illustrating the fastener 2 in a state in which comb teeth6 are closed. FIG. 2(c) is a schematic side view, seen from the arrows Bshown in FIG. 2(a), illustrating the fastener 2 in a state in which combteeth 6 are opened. FIG. 3(a) is a plan view (photograph) illustratingan example of a structure like the fastener 2 of the one embodiment ofthe present invention. FIG. 3(b) is a side view (photograph) (a state inwhich the comb teeth are closed) seen from arrows B shown in FIG. 3(a).FIG. 3(c) is a side view (photograph) (a state in which the comb teethare opened) seen from arrows C shown in FIG. 3(a).

<Explanation of Inverting Member of One Embodiment>

FIG. 1 illustrates a plane shape of the inverting member 4 in an initialstate in which the inverting member 4 is not yet deformed. From thisinitial state, the inverting member 4 is deformed to superimposeconnection regions indicated by arrows X, X′ and tighten the connectionregions with a tightening member, so that the fastener 2 as shown inFIGS. 2(a), 2(b), and 2(c) is formed.

The inverting member 4 is formed of a metal thin plate as an elasticmaterial. As shown in FIG. 1, the inverting member 4 has, in the initialstate, a substantial quadrilateral plane shape composed of a pair oflong side portions 4 a, 4 b being opposed to each other and a pair ofshort side portions 4 c, 4 d being opposed to each other. Each of aplurality of comb teeth 6 is fixed in a cantilevered state with respectto the long side portion 4 a that is positioned at a lower side in thedrawing. The long side portion 4 a may be referred to as one of the longside portions 4 a or a comb teeth attachment part 4 a.

The long side portion 4 b that is positioned at a location opposed tothe long side portion 4 a is referred to as the other of the long sideportions 4 b. Since a friction member 20 is mounted on the long sideportion 4 b as described later with reference to FIG. 2(a), the longside portion 4 b is also referred to as a friction body mounting part 4b. On the other hand, the short side portion 4 c that is connected to anend of a right side of the one of the long side portions (the comb teethattachment part) 4 a in the drawing is referred to as one short sideportion 4 c, and the short side portion 4 d that is connected to an endof a left side of the one of the long side portions (the comb teethattachment part) 4 a in the drawing is referred to as other short sideportion 4 d.

The one short side portion 4 c and the other short side portion 4 dextend in the same direction that is approximately perpendicular to alongitudinal direction of the one of the long side portions (the combteeth attachment part) 4 a. Ends of the one of the long side portions(the comb teeth attachment part) 4 a, the other of the long sideportions (the friction body mounting part) 4 b, the one short sideportion 4 c, and the other short side portion 4 d are connected to eachother at ends except for between the ends of the other of the long sideportions (the friction body mounting part) 4 b and the other short sideportion 4 d. An apart region is provided between the end of the other ofthe long side portions (the friction body mounting part) 4 b and the endof the other short side portion 4 d.

In other words, the one of the long side portions (the comb teethattachment part) 4 a is respectively connected to the one short sideportion 4 c and the other short side portion 4 d at both ends thereof,and the one short side portion 4 c is connected to the other of the longside portions (the friction body mounting part) 4 b at an opposite endthereof. The other of the long side portions (the friction body mountingpart) 4 b extends from a connection portion (see an arrow Z) with theone short side portion 4 c to oppose to the one of the long sideportions (the comb teeth attachment part) 4 a.

The apart region indicated by an arrow Y is provided between an end of afree end side of the other of the long side portions (the friction bodymounting part) 4 b and an end of a free end side of the other short sideportion 4 d. The apart region (see the arrow Y) extends in alongitudinal direction of the other short side portion 4 d.

The connection regions that are superimposed each other when theinverting member 4 is deformed are provided on both sides of the apartregion (see the arrow Y). The connection region indicated by the arrow Xis provided on the end of the free end side of the other of the longside portions (the friction body mounting part) 4 b, and a connectionhole 12 is provided on this connection region (see the arrow X). Theconnection region indicated by the arrow X′ is provided on the end ofthe free end side of the other short side portion 4 d, and a connectionhole 14 is provided on this connection region (see the arrow X′).

According to the embodiment, the connection region (see the arrow X)disposed on the other of the long side portions (the friction bodymounting part) 4 b is arranged to be more apart from the one of the longside portions (the comb teeth attachment part) 4 a relative to a case inwhich the longitudinal direction of the other of the long side portions(the friction body mounting part) 4 b is parallel to the longitudinaldirection of the one of the long side portions (the comb teethattachment part) 4 a. Therefore, the large apart region (see the arrowY) is obtained without reducing a length of the other short side portion4 d.

A central part of the other of the long side portions (the friction bodymounting part) 4 b is formed to be curved in a direction to approach theone of the long side portions (the comb teeth attachment part) 4 a asindicated by an arrow A. That is, the central part is formed to becurved so as to project inside the substantial quadrilateral.

A width dimension of the other of the long side portions (the frictionbody mounting part) 4 b is formed to be larger than that of other sideportions 4 a, 4 c, 4 d. On two places of the other of the long sideportions (the friction body mounting part) 4 b, lightening holes 22 areprovided, so that the other of the long side portions (the friction bodymounting part) 4 b is composed of three areas indicated by 4 b 1, 4 b 2,4 b 3. The lightening holes 22 enable weight reduction of the invertingmember 4, so that the inverting member 4 is easily deformed.

On the whole inverting member 4, five attachment holes 24 are provided.The fastener 2 is sewed on a wig base, and so on, by passing sewingtreads, or the like, through the attachment holes 24.

Each of the plurality of metal comb teeth 6 is composed of an axisportion 6 a and a head portion 6 b whose diameter is larger than that ofthe axis portion 6 a. Each of the axis portions 6 a of the comb teeth 6is fixed to the inverting member 4 at an opposite side end thereof to aside on which the head portion 6 b is provided, by welding (for example,brazing). That is, each of the comb teeth 6 is fixed in a cantileveredstate with respect to the inverting member 4. A fixing method is notintended to be restricted to welding, so that a tightening member may beused to mechanically tighten, or other arbitrary fixing methods may beadopted.

The comb teeth 6 is fixed to the inverting member 4 that is formed to becapable of being inverted so that a curved shape including a concave anda convex becomes in an opposite direction. Therefore, in a state as aclose state of the comb teeth 6, the comb teeth 6, especially the headportions 6 b of the comb teeth 6 are in contact with the invertingmember 4. In an open state of the comb teeth 6 that the inverting member4 is inverted to an opposite side, the comb teeth 6 are lifted at apredetermined angle from the inverting member 4.

With reference to FIGS. 2 and 3, an explanation will be made withrespect to the above description. FIG. 2(a) is a plan view illustratinga state in which the inverting member 4 shown in FIG. 1 is deformed(curved) to superimpose the connection regions (see the arrows X, X′) sothat the connection regions are connected to each other with aconnection member.

FIGS. 2(b) and 2(c) are schematic side views seen from the arrows Bshown in FIG. 2(a). FIG. 2(b) illustrates the close state of the combteeth 6. FIG. 2(c) illustrates the open state of the comb teeth 6. Asshown in FIG. 2(b), a state in which the inverting member 4 is curved tobe convex downward in the drawing is the close state of the comb teeth 6in which the comb teeth 6, especially the head portions 6 b of the combteeth 6 are in contact with the inverting member 4. On the other hand,when the inverting member 4 is inverted in an opposite direction so thatthe inverting member 4 becomes curved to convex upward in the drawing asshown in FIG. 2(c), the comb teeth 6 become the open state in which thecomb teeth 6 are apart from the inverting member 4. Each state ismaintained by an elastic force of the inverting member 4. In the openstate of the comb teeth 6, when the comb teeth 6 are closed after hairsare inserted between the comb teeth 6 and the inverting member 4, theclose state of the comb teeth 6 is maintained. Therefore, between thecomb teeth 6 and the inverting member 4, hairs are certainly held(grasped).

According to an example shown in FIGS. 3(a), 3(b), and 3(c), FIG. 3(a)is a plan view like FIG. 2(a), and FIG. 3(b) is also a side view, seenfrom the arrows B shown in FIG. 3(a), illustrating the close state ofthe comb teeth 6 like FIG. 2(b).

FIG. 3(c) is a side view, seen from the arrows C shown in FIG. 3(a),illustrating the open state of the comb teeth 6. The state in which thecomb teeth 6 are opened is definitely illustrated in FIG. 3(c). In FIG.3(c), each of the comb teeth 6 with a length L is opened at an openingangle θ with respect to the inverting member 4, so that each of the headportions 6 b of the comb teeth 6 is apart from the inverting member 4with a distance H. The length L of each of the comb teeth 6 is a lengthexcept for a fixing portion (a welding part) to the inverting member 4,so that a relation of H=L×sin θ is established.

<Explanation of Deformation of Inverting Member>

In the initial state shown in FIG. 1, the inverting member 4 is deformed(curved) so that the connection hole 12 provided on the other of thelong side portions (the friction body mounting part) 4 b and theconnection hole 14 provided on the other short side portion 4 d coincidewith each other. In this state, a connection member 10 is inserted intothe connection hole 12 and the connection hole 14, so that thesuperimposed connection regions (see the arrows X, X′) are connected toeach other. For example, after a metallic rivet as the connection member10 is inserted into the connection holes 12, 14, a tip portion of theinserted rivet may be plastically deformed to connect the superimposedconnection regions. That is, the connection regions are connected toeach other by “caulking”.

A connecting method is not intended to be restricted to the methodsdescribed above, that is, the connection regions may be mechanicallyconnected to each other by, for example, a bolt, a nut or otherconnection members and may be connected to each other by welding. Sinceeach of the superimposed connection regions affords to relatively moveby using the connection member 10, the structure is considered to bemore excellent in operability.

A more detail description will be made hereinafter with respect to astructure deforming (curving) the inverting member 4 in order to conformpositions of the connection holes 12, 14 of the inverting member 4.

In the initial state, the inverting member 4 is deformed so that theinverting member 4 is curved in a direction that is perpendicular to aplane of the inverting member 4 (that is, a vertical direction withrespect to a surface of a paper shown in FIG. 1). At this time, theapart region (see the arrow Y) extends in the longitudinal direction ofeach of the short side portions (especially, the other short sideportion 4 d). Therefore, when the connection regions (see the arrows X,X′) on both sides of the apart region (see the arrow Y) are deformed tobe superimposed each other, the long side portions 4 a, 4 b whoselengths (dimensions in longitudinal directions) are large arerespectively twisted to be rotated around connection portions (see thearrows Z, Z′) to the one short side portion 4 c. This movement isschematically shown by arrows with dotted lines in FIG. 1. Althoughrotation angles (twist angles) around the connection portion between theside portions as a rotation center are the same, the longer a length ofthe side portion that is rotated (twisted) is, the larger the movingdistance on a tip portion of the rotation becomes. That is, theinverting member 4 is largely deformed as the whole. As a result, in theinverting member 4 whose connection regions are connected in a deformedstate, difference of angle of the inverting member that is curved in theopposite direction under an inverted condition relative to a notinverted condition becomes large.

Therefore, in a state in which the comb teeth 6 are opened shown in FIG.3(c), the opening angle θ formed with the comb teeth 6 and the invertingmember 4 is set to be large. Since hairs are inserted to a neighborhoodof a root portion of each of the comb teeth 6 fixed to the invertingmember 4, more hairs are inserted. In the state in which the comb teeth6 are opened, the opening angle θ is large, so that a distance H betweenthe tips of the comb teeth 6 and the inverting member 4 is set to belarge. Accordingly, hairs are easily inserted between the opened combteeth 6 and the inverting member 4.

The inverting member 4 is deformed so that in the initial state shown inFIG. 1, a distance D between a center of the connection hole 12 and acenter of the connection hole 14 becomes 0. That is, a deformed amountof the connection regions (see the arrows X, X′) from the initial stateto a superimposed state coincides with the distance D. As shown in FIG.1, when the length of the one of the long side portions (the comb teethattachment part) 4 a is set to be W, a ratio of the moving amount D fromthe initial state to the superimposed state to a length W of the one ofthe long side portions (the comb teeth attachment part) 4 a is expressedas D/W.

A value of D/W is an index indicating degree of a deformation of theinverting member 4, so that basically, the larger the value of D/W is,the larger the degree of the deformation is. Therefore, according to thefastener 2 that is formed, when the value of D/W is large and the combteeth 6 are opened, the opening angle θ formed with the comb teeth 6 andthe inverting member 4 is larger, and the distance H between the tipportions (the head portions 6 b) of the comb teeth 6 and the invertingmember 4 is set to be large. When the moving amount D becomes larger,durability of the inverting member 4 tends to decrease and a forcerequired to invert the inverting member 4 tends to increase.

Therefore, by setting D/W within an appropriate range, hairs can beinserted between the opened comb teeth 6 and the inverting member 4, andmore amount of hairs can be inserted between the opened comb teeth 6 andthe inverting member 4. Therefore, the fastener 2 that is preferable interms of durability and operability can be provided.

Since a moving direction from the initial state to the superimposedstate conforms to the longitudinal direction of the other short sideportion 4 d, the moving direction is approximately perpendicular to thelongitudinal direction of the one of the long side portions (the combteeth attachment part) 4 a. However, the moving direction need not bestrictly perpendicular to the longitudinal direction of the one of thelong side portions 4 a. When the inverting member 4 is deformed, themoving directions of the connection regions only have to be within apredetermined angle range with respect to a perpendicular direction tothe longitudinal direction of the one of the long side portions (thecomb teeth attachment part) 4 a as described later.

<Explanation of Fastener of One Embodiment>

As described above, the inverting member 4 whose connection regions areconnected to each other in a deformed state is formed into asubstantially rectangular shape composed of four sides without the apartregion.

As apparent from FIG. 2(a), the head portions 6 b of the comb teeth 6are positioned in a region in which the other of the long side portions(the friction body mounting part) 4 b is disposed. Therefore, since apart of each of axis portions 6 a and each of the head portions 6 b oftips of the comb teeth 6 are positioned in the region in which the otherof the long side portions (the friction body mounting part) 4 b isdisposed, hairs are certainly held between the axis portions 6 a and thehead portions 6 b of the comb teeth 6 and the other of the long sideportions (the friction body mounting part) 4 b in a state in which thecomb teeth 6 are closed. Since the comb teeth are not extended beyondthe other of the long side portions, when a user wears the wig, there isno risk that the comb teeth interfere with a wig net.

The length of each of the comb teeth 6 and a position of each of thehead portions 6 b are not restricted to a case shown in FIGS. 2(a),2(b), and 2(c). FIG. 10 is a schematic plan view illustrating a fastenerof further embodiment including a comb teeth shape different from thatshown in FIGS. 2(a), 2(b), and 2(c). FIG. 11 is a view (photograph)illustrating an example of the fastener of the further embodiment shownin FIG. 10.

As shown in FIGS. 10 and 11, at least a part of each of the headportions 6 b of the comb teeth 6 may be positioned in an outward of thesubstantial quadrilateral plane shape that is composed of the pair ofopposed long side portions 4 a, 4 b and the pair of opposed short sideportions 4 c, 4 d (that is, positioned in an outward of the other of thelong side portions 4 b), and the other part of each of the comb teeth 6may be positioned in a region of the substantial quadrilateral planeshape. Only each of the head portions 6 b of the comb teeth 6 or only apart of each of the head portions 6 b of the comb teeth 6 may extendbeyond the other of the long side portions 4 b.

Each of the comb teeth 6 projected out the substantial quadrilateralplane shape allows the user to easily scoop their hairs, when a userwears the wig. On the other hand, when a projecting amount is large,each of the comb teeth 6 sometimes interferes with the wig net.According to the embodiment, at least a part of the head portion 6 b ofthe tip of each of the comb teeth 6 is positioned in the outward of thesubstantial quadrilateral plane shape, so that, when a user wears thewig, the user easily scoops their hairs. Further, each of the headportions 6 b approaches the other of the long side portions (thefriction body mounting part) 4 b as possible, so that, when a user wearsthe wig, each of the comb teeth 6 is restrained from interfering withthe wig net.

When also a limited area of the axis portion 6 a near the head portion 6b (for example, an area whose length is not more than 1 mm from a borderwith the head portion 6 b) is positioned in the outward of thesubstantial quadrilateral plane shape as well as the head portion 6 b ofeach of the comb teeth 6, almost the same action and effect as above aregenerated.

When an outer diameter of each of the axis portions 6 a of the combteeth 6 is constant, a bending moment on a base portion of each of thecomb teeth 6 (an attachment portion to the inverting member 4) isconstant. Therefore, the shorter the length of each of the comb teeth 6is, the larger a press force of the tip of each of the comb teeth 6 to aside of the inverting member 4 becomes. On the other hand, when thelength of each of the comb teeth 6 is large, an installation area of thefriction member 20 becomes large. In this regard, a holding force ofhairs improves.

According to both the embodiments shown in FIGS. 2 and 10, the balancedlength of each of the comb teeth 6 with respect to the press force ofthe tip of each of the comb teeth 6 and the installation area (length)of the friction member 20 is adopted.

The friction member 20 is disposed on the whole surface of the other ofthe long side portions (the friction body mounting part) 4 b of theinverting member 4. For the friction member 20, an elastic materialhaving a high friction coefficient such as a rubber, for example,silicon, elastomer, and urethane, may be used.

For example, in the initial state, the friction member 20 formed into atube shape is inserted from the apart region (see the arrow Y) and thefriction member 20 is put on to cover the other of the long sideportions (the friction body mounting part) 4 b. After that, theinverting member 4 is deformed to connect the connection regions eachother, so that the other of the long side portions (the friction bodymounting part) 4 b of the inverting member 4 is provided with thefriction member 20. An installation method of the friction member 20 isnot intended to be restricted to the above case. After the invertingmember 4 is deformed to connect the connection regions each other, thefriction member 20 may be attached to the other of the long sideportions (the friction body mounting part) 4 b by adhering or the like.

According to the embodiment, since the friction member 20 is provided onthe other of the long side portions (the friction body mounting part) 4b, in the state in which the comb teeth 6 are closed, a holding forcethat holds hairs between the comb teeth 6 and the friction member 20increases, so that hairs are more certainly held. As described above,since the width dimension of the other of the long side portions (thefriction body mounting part) 4 b is set to be large, hairs can be heldin a wider area between the comb teeth 6 and the friction member 20 withthe axis portions 6 a of the comb teeth 6 as well as the head portions 6b of the comb teeth 6 by providing the friction member 20 on the wholearea of the other of the long side portions (the friction body mountingpart) 4 b.

Also, in a case shown in FIGS. 10 and 11, since the friction member 20exists a little outside the other of the long side portions (thefriction body mounting part) 4 b, hairs can be held between the headportions 6 b of the comb teeth 6 and the friction member 20.

According to the inverting member 4 in the initial state shown in FIG.1, as described above, the connection region (see the arrow X) disposedon the other of the long side portions (the friction body mounting part)4 b is arranged to be more apart from the one of the long side portions(the comb teeth attachment part) 4 a relative to a case in which thelongitudinal direction of the other of the long side portions (thefriction body mounting part) 4 b is parallel to the longitudinaldirection of the one of the long side portions (the comb teethattachment part) 4 a. Therefore, the large apart region (see the arrowY) is obtained without reducing a length of the other short side portion4 d.

The lager apart region (see the arrow Y) is obtained. Accordingly, theinverting member 4 is more greatly deformed to connect the connectionregions (see the arrows X, X′) when the inverting member 4 is deformedfrom the initial state. Therefore, according to the fastener 2 that isformed, in the state in which the comb teeth 6 are opened, the openingangle θ formed with the comb teeth 6 and the inverting member 4 is setto be larger, and the distance H between the tips of the comb teeth 6(the head portions 6 b) and the inverting member 4 is set to be large.

According to the inverting member 4, in the initial state shown in FIG.1, as described above, the central part of the other of the long sideportions (the friction body mounting part) 4 b is formed to be curved ina direction to approach the one of the long side portions (the combteeth attachment part) 4 a (see the arrow A). Accordingly, the invertingmember 4 is deformed to be more largely and smoothly inverted.Therefore, according to the fastener 2 that is formed, in the state inwhich the comb teeth 6 are opened, the opening angle θ formed with thecomb teeth 6 and the inverting member 4 is set to be larger, and thedistance H between the tips of the comb teeth 6 (the head portions 6 b)and the inverting member 4 is set to be large.

Metallic material such as stainless steel, carbon steel, aluminum,copper, and titanium may be used as metallic material that constitutesthe inverting member 4 and the comb teeth 6. Coating treatment may beperformed on a surface of a metallic thin plate. Coating on the surfaceof metal is particularly effective in order to counter a metal allergy.In order to improve a feel on wearing, for example, rubber touch coatingmay be performed and coating with other arbitrary material may beperformed for different purposes.

Describing a dimension of the inverting member 4, 0.5 to 2 mm isexemplified as a thickness, 20 to 50 mm is exemplified as the length ofthe long side portion side corresponding to W, and 15 to 30 mm isexemplified as the length of the short side portion side. Further, 10 to30 mm is exemplified as the length of each of the comb teeth 6 and 0.3to 2 mm is exemplified as the outer diameter of the axis portion 6 a ofeach of the comb teeth 6. The dimensions described above are exemplifiedin a case for applying to the wig and other arbitrary dimensions may beadopted according to purposes.

(Explanation of Inverting Member of Other Embodiments>

With reference to FIGS. 4 and 5, inverting members 4 of otherembodiments of the present invention will be explained. FIGS. 4 and 5are schematic plan views each illustrating an inverting member 4 ofanother embodiment of the present invention.

<Explanation of Embodiment Shown in FIG. 4>

An inverting member 4 of the other embodiment shown in FIG. 4 is formedinto a shape similar to that of the inverting member 4 of the oneembodiment shown in FIG. 1. The inverting member 4 shown in FIG. 1includes the apart region (see the arrow Y) between the end (see thearrow X) of the other of the long side portions (the friction bodymounting part) 4 b disposed on an upper side in the drawing and the end(see the arrow X′) of the other short side portion 4 d. On the otherhand, the inverting member 4 shown in FIG. 4 is different from theinverting member 4 shown in FIG. 1 in that the inverting member 4 shownin FIG. 4 has the apart region (see the arrow Y) between the end (seethe arrow X′) of the one of the long side portions (the friction bodymounting part) 4 a disposed on a lower side in the drawing and the end(see the arrow X) of the other short side portion 4 d. Therefore, theinverting member 4 of the other embodiment shown in FIG. 4 is providedwith a structure of connection of the other of the long side portions(the friction body mounting part) 4 b and the other short side portion 4d.

When the inverting member 4 is deformed (curved), basically like theinverting member 4 of the one embodiment shown in FIG. 1, the long sideportions 4 a, 4 b whose lengths (the dimensions in longitudinaldirections) are large are respectively twisted to be rotated (see arrowswith dotted lines) around connection portions (see the arrows Z, Z′)with the one short side portion 4 c to more greatly deform the invertingmember 4.

Since other shapes are similar to that of the inverting member 4 of theone embodiment shown in FIG. 1, a more detail explanation will beomitted.

<Explanation of Embodiment Shown in FIG. 5>

An inverting member 4 of the other embodiment shown in FIG. 5 is similarto the inverting members 4 of the embodiments shown in FIGS. 1 and 4 inthat the inverting member 4 has the substantial quadrilateral planeshape composed of the pair of long side portions 4 a, 4 b being opposedto each other and the pair of short side portions 4 c, 4 d being opposedto each other in the initial state, and the plurality of comb teeth 6are fixed to the one of the long side portions 4 a that is positioned ata lower side in the drawing. However, the inverting member 4 of theother embodiment shown in FIG. 5 is different from the inverting members4 of the embodiments shown in FIGS. 1 and 4 in that the inverting member4 of the other embodiment shown in FIG. 5 has an apart region (see arrowY) extending in the longitudinal direction of the other short sideportion 4 d disposed on a middle of the other short side portion 4 d.Therefore, all the long side portions 4 a, 4 b and the short sideportions 4 c, 4 d are connected to at the ends.

When the inverting member 4 is deformed (curved), basically like theinverting member 4 of the one embodiment shown in FIG. 1, the long sideportions 4 a, 4 b whose lengths (the dimensions in longitudinaldirections) are large are respectively twisted to be rotated (see arrowswith dotted lines) around connection portions (see the arrows Z, Z′)with the one short side portion 4 c to more greatly deform the invertingmember 4.

Since other shapes, and the like, are approximately similar to that ofthe inverting members 4 of the embodiments shown in FIGS. 1 and 4, amore detail explanation will be omitted.

(Explanation of Relation Between Ratio D/W and Distance H When CombTeeth Are Opened)

With reference to FIGS. 6 to 9, an appropriate range of the ratio D/Wdescribed above will be explained hereinafter. FIG. 6 is a view(photograph) illustrating Example 1 of the fastener including theinverting member according to the one embodiment of the presentinvention shown in FIG. 1. FIG. 7 is a view (photograph) illustratingExample 2 of the fastener including the inverting member according toanother embodiment of the present invention shown in FIG. 5. FIG. 8 is aview (photograph) illustrating Example 3 of the fastener including theinverting member according to another embodiment of the presentinvention shown in FIG. 5. FIG. 9 is a view (photograph) illustratingExample 4 of the fastener including the inverting member according tothe one embodiment of the present invention shown in FIG. 1.

In Example 1 shown in FIG. 6, the length W of the one of the long sideportions (the comb teeth attachment part) of the inverting member in theinitial state is 40.5 mm and a value of the moving amount D, when theinverting member is deformed, is 6.85 mm. Accordingly, a value of D/W,as a ratio of the moving amount D to the length W of the long sideportion (the comb teeth attachment part), is 0.169. At this situation, adistance (a maximum distance) H (the maximum distance is formed betweena central one of the comb teeth and the inverting member) between a tipportion of one of the comb teeth that are opened and the invertingmember is 9.3 mm. Since the length L of each of the comb teeth exceptfor a welding part is 11 mm, the opening angle θ formed with the axisportions of the comb teeth and the inverting member is 58 degrees.

That is, according to Example 1 shown in FIG. 6, an opening height H ofthe comb teeth that are opened to insert hairs thereinto is 9.3 mm andthe opening angle θ is 58 degrees. When a hairs insertion test has beenactually performed by a user, a preferable determination result has beenobtained that the fastener has the opening height H capable of easyinsertion of hairs and the opening angle θ capable of sufficient amountof insertion of hairs. Also, in an inverting repetition test on theinverting member, a preferable determination result in terms ofdurability and operability has been obtained.

In Example 2 shown in FIG. 7, the length W of the one of the long sideportions (the comb teeth attachment part) of the inverting member in theinitial state is 35.5 mm and the value of the moving amount D, when theinverting member is deformed, is 4.9 mm. Accordingly, the value of D/W,as the ratio of the moving amount D to the length W of the long sideportion (the comb teeth attachment part), is 0.138. At this situation,the distance (the maximum distance) H between the tip portion of one ofthe comb teeth that are opened and the inverting member is 4.9 mm. Sincethe length L of each of the comb teeth except for the welding part is 16mm, the opening angle θ formed with the axis portions of the comb teethand the inverting member is 18 degrees.

That is, according to Example 2 shown in FIG. 7, the opening height H ofthe comb teeth that are opened to insert hairs thereinto is 4.9 mm andthe opening angle θ is 18 degrees. When the hairs insertion test hasbeen actually performed by the user, it has turned out that hairs can beinserted, but ease of hairs insertion fails to reach a level of Example1, and the amount of hairs capable of insertion does not also reach alevel of Example 1.

That is, according to Example 2, the fastener is practically usable.However, with respect to ease of hairs insertion and the amount of hairsinsertable, the preferable determination result like that of Example 1has not been obtained. Also, in the inverting repetition test on theinverting member, a preferable determination result like that of Example1 in terms of durability and operability has been obtained.

In Example 3 shown in FIG. 8, the length W of the one of the long sideportions (the comb teeth attachment part) in the initial state is 48.5mm and the value of the moving amount D, when the inverting member isdeformed, is 5.55 mm. Accordingly, the value of D/W, as the ratio of themoving amount D to the length W of the long side portion (the comb teethattachment part), is 0.114. At this situation, the distance (the maximumdistance) H between the tip portion of one of the comb teeth that areopened and the inverting member is 4.7 mm. Since the length L of each ofthe comb teeth except for the welding part is 16 mm, the opening angle θformed with the axis portions of the comb teeth and the inverting memberis 17 degrees.

That is, according to Example 3 shown in FIG. 8, the opening height H ofthe comb teeth that are opened to insert hairs thereinto is 4.7 mm andthe opening angle θ is 17 degrees. When the hairs insertion test hasbeen actually performed by the user, it has turned out that hairs can beinserted, but ease of hairs insertion fails to reach the level ofExample 1, and the amount of hairs capable of insertion does not alsoreach the level of Example 1.

That is, according to Example 3, the fastener is practically usable.However, with respect to ease of hairs insertion and the amount of hairsinsertable, the preferable determination result like that of Example 1has not been obtained. Also, in the inverting repetition test on theinverting member, a preferable determination result like that of Example1 in terms of durability and operability has been obtained.

In the example 4 shown in FIG. 9, the length W of the one of the longside portions (the comb teeth attachment part) in the initial state is40.5 mm and the value of the moving amount D, when the inverting memberis deformed, is 7.0 mm. Accordingly, the value of D/W, as the ratio ofthe moving amount D to the length W of the long side portion (the combteeth attachment part), is 0.173. At this situation, the distance (themaximum distance) H between the tip portion of one of the comb teeththat are opened and the inverting member is 10.3 mm. Since the length Lof each of the comb teeth except for the welding part is 11 mm, theopening angle θ formed with the axis portions of the comb teeth and theinverting member is 69 degrees.

That is, according to the example 4 shown in FIG. 9, the opening heightH of the comb teeth that are opened to insert hairs thereinto is 10.3 mmand the opening angle θ is 69 degrees. When the hairs insertion test hasbeen actually performed by the user, it has turned out that the fastenerhas the opening height H capable of easy insertion of hairs and theopening angle θ capable of sufficient amount of insertion of hairs likeExample 1. However, when the inverting repetition test on the invertingmember has been performed, it has turned out that durability andoperability does not reach the level of Example 1.

That is, with respect to ease of hairs insertion and the amount of hairsinsertable, the preferable determination result like that of Example 1has been obtained. However, the preferable determination result likethat of Example 1 in terms of durability and operability has not beenobtained.

The above results are summarized in a table below.

W D H θ INSERT- DURA- [mm] [mm] D/W [mm] [degrees] ABILITY BILITY EXAM-40.5 6.85 0.169 9.3 58 PREFER- PREFER- PLE 1 ABLE ABLE EXAM- 35.5 4.90.138 4.9 18 — PREFER- PLE 2 ABLE EXAM- 48.5 5.55 0.114 4.7 17 — PREFER-PLE 3 ABLE EXAM- 40.5 7.0 0.173 10.3 69 PREFER- — PLE 4 ABLE

That is, the preferable determination result has been obtained from onlyExample 1 of D/W=1.169 with respect to all of ease of hairs insertion,the amount of hairs insertable, durability, and operability.

<Relation Between D/W and H>

A relation between the value of D/W and the distance (the maximumdistance) H from tip portions of the comb teeth to the inverting memberis expressed by a following approximate equation (a cubic equation) onthe basis of data obtained from the above.

H=11, 160*(D/W)³−2,269*(D/W)²+4,760*(D/W)+12.3

The relation between D/W and H expressed by the above equation will beillustrated in a graph shown in FIG. 12 with the above four-measuredvalues. FIG. 12 is the graph illustrating a relation between the ratioD/W of the moving amount D deforming the inverting member to the lengthW of the one of the long side portions and the distance (the maximumdistance) H when the comb teeth are opened, according to the fastener ofthe present invention.

<Relation Between D/W and θ>

Similarly, a relation between the value of D/W and the opening angle θfrom the opened comb teeth to the inverting member is expressed by afollowing approximate equation (a cubic equation) on the basis of thedata obtained from the above.

θ=322,072*(D/W)³−11,289*(D/W)²+13,103*(D/W)+487

The relation between D/W and θ expressed by the above equation will beillustrated in a graph shown in FIG. 13 with the above four-measuredvalues. FIG. 13 is the graph illustrating the relation between the ratioD/W of the moving amount D deforming the inverting member to the lengthW of the one of the long side portions and the opening angle θ when thecomb teeth are opened, according to the fastener of the presentinvention.

Since the distance H depends on a length of the axis portion of each ofthe comb teeth as well as open conditions of the comb teeth, it can besaid that the opening angle θ more objectively indicates the openconditions of the comb teeth. When a test in which hairs are insertedbetween the comb teeth and the inverting member has been performed withseveral sets of the comb teeth of various opening angles assuming scenewhere a wig is actually put on a head, it has turned out that theopening angle θ of 25 degrees or more is preferable in terms of ease ofhairs insertion and the amount of hairs insertable between the combteeth and the inverting member. This also agrees with the four-test datadescribed above.

Further, it has turned out that the opening angle θ of 35 degrees ormore, particularly 40 degrees or more is further preferable in terms ofease of hairs insertion and the amount of hairs insertable between thecomb teeth and the inverting member.

On the other hand, it has turned out that the opening angle θ over 60degrees does not affect much in terms of practical ease of hairsinsertion and the amount of hairs insertable. Further, as shown Example4 above, it has turned out that the opening angle θ over 60 degreestends to deteriorate durability and operability of the inverting member.

Therefore, according to the fastener for a wig of the present invention,it has turned out that as the value of the ratio D/W of the movingamount D deforming the inverting member to the length W of the one ofthe long side portions, it is preferable to have a relation0.15≤D/W≤0.17 (Equation 1) corresponding to the opening angle θ of 25degrees or more and 60 degrees or less, on the basis of the graph ofFIG. 13.

It has turned out that it is more preferable to have a relation 0.16(corresponding to θ=39 degrees) ≤D/W≤0.17 (Equation 2) corresponding tothe opening angle θ of 40 degrees or more and 60 degrees or less, on thebasis of the graph of FIG. 13.

As described above, it has turned out that it is preferable to have therelation 0.15≤D/W≤0.17 (Equation 1) in terms of ease of hairs insertion,the amount of hairs insertable, durability, and operability. It hasturned out that it is more preferable to have the relation 0.16≤D/W≤0.17(Equation 2) in terms of ease of hairs insertion and the amount of hairsinsertable, and preferable in terms of durability and operability.

In the example shown in FIG. 11, the value of D/W is 0.169 like that ofExample 1. Further, the distance (the maximum distance) H between thetip portion of one of the comb teeth that are opened and the invertingmember is 13 mm. Since the length L of each of the comb teeth except forthe welding part is 16 mm, and the opening angle θ formed with the axisportions of the comb teeth and the inverting member is 54 degrees. Thatis, the opening angle θ of 40 degrees or more and 60 degrees or less,and D/W has the relation 0.16≤D/W≤0.17. Accordingly, it has turned outthat the example shown in FIG. 11 is also excellent in terms of ease ofhairs insertion, the amount of hairs insertable, durability, andoperability like Example 1.

The connection regions move by the moving amount D from the initialstate to the superimposed state. Since moving directions of theconnection regions are along the longitudinal direction of the shortside portion, the moving directions of the connection regions areapproximately perpendicular to the longitudinal direction of the longside portion. The moving directions of the connection regions need notbe restricted to be strictly perpendicular to the longitudinal directionof the long side portion. For example, when the moving amount is set100% (sin 90 degrees) in a case in which the moving direction is 90degrees to be strictly perpendicular to the longitudinal direction ofthe long side portion, the moving amount becomes 98% (sin 80 degrees) ina case in which the moving direction is 80 degrees with respect to thelongitudinal direction of the long side portion, and the moving amountbecomes 94% (sin 70 degrees) in a case in which the moving direction is70 degrees with respect to the longitudinal direction of the long sideportion. It is considered that the conditional expression 1 and theconditional expression 2 may be substantially applied to within theabove ranges. Therefore, it is considered that when the movingdirections of the connection regions indicated by the moving distance Dhave 70 degrees or more with respect to the longitudinal direction ofthe long side portion, the above conditional expression 1 andconditional expression 2 may be applied to.

(Explanation of Wig With Fastener)

With reference to FIG. 14, a wig to which one of the fasteners of thevarious examples described above is attached will be described. FIG. 14is a plan view schematically illustrating a wig 40 to which the fastener2 of the present invention is attached.

FIG. 14 illustrates a pair of the fasteners 2 that are attached to aback-surface side (a side to be in contact with a head of a user) of awig base 30. Specifically, the fasteners 2 are attached to front regionsof user's ears (temples) as neighborhoods of edge portions of the wigbase 30. The number of the fasteners 2 that are attached to the wig base30 is not restricted to two, and arbitrary number of fasteners 2 may beattached to the wig base 30 for different purposes.

As a method for attaching the fastener 2 to the wig base 30, it isconsidered to pass sewing threads through a plurality of the attachmentholes 24 that are provided on the fastener 2 and to sew the fastener 2on the wig base 30. The method for attaching the fastener 2 to the wigbase 30 is not intended to be restricted to the above method. Anotherconnection member may be used and the fastener 2 may be attached to thewig base 30 by a known arbitrary method.

Artificial hairs 32 are planted to the above wig base 30 to form the wig40. When a user wears the wig 40, the comb teeth of each of thefasteners 2 that is disposed on each of the front regions of ears(temples) become the open state to insert user's hairs between the combteeth and the inverting member after the wig base 30 is put on the head.After that, the inverting member is inverted, so that hairs are pinchedbetween the comb teeth and the inverting member to hold hairs.Accordingly, the wig 40 is stationarily fixed to the head.

As well as the use for fixing the wig base described above, the fastenerof the present invention may be applied to other arbitrary fields aslong as the inverting member is inverted to pinch and fix an object byan elastic force of the inverting member in a state in which the objectto be fixed is inserted into the comb teeth and the inverting member.

Although the embodiment of the present invention has been described, thecontents of disclosure in the embodiment can obviously change indetailed structures, and changes in combination and order of componentsin the embodiment can be achieved without departing from the scope andspirit of the appended claims of the present invention.

REFERENCE SIGNS LIST

2 fastener

4 inverting member

4 a one of the long side portions (the comb teeth attachment part)

4 b the other of the long side portions (the friction body mountingpart)

4 c one short side portion

4 d the other short side portion comb teeth

6 a axis portion

6 b head portion

10 connection member

12 connection hole

14 connection hole

20 friction member

22 lightening hole

24 attachment hole

30 wig base

32 artificial hairs

40 wig

X, X′ connection region

Y apart region

Z, Z′ connection portion

1. A fastener comprising: an inverting member formed of an elastic plateshape member, the inverting member having, in an initial state that isnot deformed, a substantial quadrilateral plane shape composed of a pairof long side portions being opposed to each other and a pair of shortside portions being opposed to each other, and an apart region beingdisposed between the long side portion and the short side portion or ona middle of the short side portion to extend in a longitudinal directionof the short side portion, the inverting member having connectionregions respectively disposed on both sides of the apart region; aconnection portion that connects the connection regions that aresuperimposed each other by a deformation of the inverting member; and aplurality of comb teeth whose one ends are fixed to one of the long sideportions, wherein when, in the initial state, a length of the one of thelong side portions is set to be W and a moving amount of the connectionregions from the initial state to a superimposed state is set to be D, arelation of 0.15≤D/W≤0.17 is established.
 2. A fastener according toclaim 1, wherein each of the comb teeth includes a head portion disposedon a free end of each of the comb teeth, and each of the head portionsis positioned in a region in which the other of the long side portionsis disposed.
 3. A fastener according to claim 1, wherein each of thecomb teeth includes a head portion disposed on a free end of each of thecomb teeth, at least a part of each of the head portions is positionedin an outward of the substantial quadrilateral plane shape, and theother part of each of the comb teeth is positioned in a region of thesubstantial quadrilateral plane shape.
 4. A fastener according to claim2, wherein a friction member is provided on the other of the long sideportions.
 5. A fastener according to any one of claim 1, wherein in theinitial state, the apart region is provided between the other of thelong side portions and the short side portion, and the connection regiondisposed on the other of the long side portions is arranged to be moreapart from the one of the long side portions relative to a case in whicha longitudinal direction of the other of the long side portions isparallel to a longitudinal direction of the one of the long sideportions.
 6. A fastener according to claim 5, wherein, in the initialstate, a central part of the other of the long side portions is formedto be curved in a direction to approach the one of the long sideportions.